ACPI: hpet: ACPI Error (utglobal-0126): Unknown exception code: 0xFFFFFFF0 (78e1ca49) · Commits · 戴 / test

If hpet has been initialized before registering hpet driver, the callback function of hpet_resources will return the status code of -EBUSY, which is not defined in the ACPI exception table. So when ACPI checks the status code of callback function, it will report the unknown exception code. So the status code in ACPI is used instead of the generic error code in the ACPI callback function of hpet_resources. For example: -EBUSY is replaced by AE_ALREADY_EXISTS -EINVAL is replaced by AE_NO_MEMORY http://bugzilla.kernel.org/show_bug.cgi?id=8630 Signed-off-by:

Zhao Yakui <yakui.zhao@intel.com> Signed-off-by:

Len Brown <len.brown@intel.com>

drivers/char/hpet.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -943,14 +943,14 @@ static acpi_status hpet_resources(struct acpi_resource res, void data)
		printk(KERN_DEBUG "%s: 0x%lx is busy\n",
		__FUNCTION__, hdp->hd_phys_address);
		iounmap(hdp->hd_address);
		return -EBUSY;
		return AE_ALREADY_EXISTS;
		}
		} else if (res->type == ACPI_RESOURCE_TYPE_FIXED_MEMORY32) {
		struct acpi_resource_fixed_memory32 *fixmem32;

		fixmem32 = &res->data.fixed_memory32;
		if (!fixmem32)
		return -EINVAL;
		return AE_NO_MEMORY;

		hdp->hd_phys_address = fixmem32->address;
		hdp->hd_address = ioremap(fixmem32->address,
		@@ -960,7 +960,7 @@ static acpi_status hpet_resources(struct acpi_resource res, void data)
		printk(KERN_DEBUG "%s: 0x%lx is busy\n",
		__FUNCTION__, hdp->hd_phys_address);
		iounmap(hdp->hd_address);
		return -EBUSY;
		return AE_ALREADY_EXISTS;
		}
		} else if (res->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
		struct acpi_resource_extended_irq *irqp;

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